[Bug 23887] [Shadow] Put only the final destination insertion point to the event path

https://www.w3.org/Bugs/Public/show_bug.cgi?id=23887

--- Comment #147 from Hayato Ito <hayato@chromium.org> ---
(In reply to Koji Ishii from comment #145)
> The case where younger shadow roots do not have shadow insertion points:
> 
> A
>   SR1
>     B
>   SR2
> 
> When an event fired on B:
> Current: B, SR1, A, Document, Window
> Proposed: B, SR1

I can't agree this proposal because this violates the design principle of
Shadow DOM event dispatching of the following:

"Attaching a Shadow Root to an element shouldn't have any effect for an event
dispatching in the node tree which the shadow host participates in, basically"

In the proposal, attaching the younger shadow root would affect the event
dispatching in the document tree. That would violated the principle.

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Received on Friday, 13 February 2015 03:19:04 UTC